<div>
    <div class="row">
        <div class="col-lg-12">
            <div class="ibox">
                <div class="ibox-title">
                    <h5>二维码信息</h5>
                    <div class="ibox-tools" style="top:10px;">

                        <form>
                            <div class="form-row">
                                <div class="col">
                                    <button type="button" class="btn btn-primary btn-sm"
                                            v-on:click="_downLoadQrCode()">
                                        <i class="glyphicon glyphicon-download-alt"></i>
                                        下载二维码
                                    </button>
                                </div>
                            </div>
                        </form>


                    </div>
                </div>
                <div class="ibox-content">
                    <div id="qrcode" style="width:350px; height:350px; margin:15px auto;"></div>
                </div>
            </div>
        </div>
    </div>
</div>